Abstract:
We have experimentally studied the characteristics of a supersonic cw chemical HF laser with a flat nozzle array based on a nozzle – nozzle reagent mixing scheme operating with the use of F2 – D2 – He and NF3 – D2 – He fuel compositions in an atomic fluorine generator. The active medium flow field pattern, its gasdynamic characteristics, and the laser radiation spectrum are considered. The comparison of these characteristics has made it possible to establish a strong impact on the flow field (lasing zone length) of the chemical composition of the combustion products from the atomic fluorine generator. The gas-dynamic parameters of the active medium formed by using a NF3 – D2 – He fuel have turned out to be less acceptable in terms of the gas flow pressure recovery than in the case of F2 – D2 – He fuel, while the radiation spectrum was more preferable from the viewpoint of passing through the atmosphere.
Keywords:supersonic cw chemical HF laser, fluorine, nitrogen trifluoride, gas-dynamic characteristics, active medium flow pattern, laser radiation spectrum.
Fulltext:
PDF file (928 kB)
